Yes now we have 4 shards as standard, and that 5% nerf on GoSac in regards on how much damage GoSaC boosts us isn't that much. I ran some sims on my lock with 4 set bonus and 495 ilevel and it is more like 1-2% overall damage nerf. So it won't change anything for us really apart from freeing 1 glyph slot. So we can fill it with healthstone glyph or Soulstone maybe
Edit: but removing KJ spell should cripple KJ a bit since you don't have a spell to cast on situations where you need to move fast. This needs to be checked since if it's true it will be a nerf to KJ.